WM9714L_06 WOLFSON [Wolfson Microelectronics plc], WM9714L_06 Datasheet
![no-image](/images/no-image-200.jpg)
WM9714L_06
Manufacturer Part Number
WM9714L_06
Description
AC 97 Audio CODEC
Manufacturer
WOLFSON [Wolfson Microelectronics plc]
Datasheet
1.WM9714L_06.pdf
(94 pages)
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DESCRIPTION
The WM9714L is a highly integrated input/output device
designed for mobile computing and communications.
The chip is architected for dual CODEC operation, supporting
Hi-Fi stereo Codec functions via the AC link interface, and
additionally supporting voice Codec functions via a PCM type
Synchronous Serial Port (SSP). A third, auxiliary DAC is
provided which may be used to support generation of
supervisory tones, or ring-tones at different sample rates to the
main codec.
The
microphones, stereo headphones and a stereo speaker,
reducing total component count in the system. Cap-less
connections to the headphones, speakers, and earpiece may be
used, saving cost and board area. Additionally, multiple analog
input and output pins are provided for seamless integration with
analog connected wireless communication devices.
All device functions are accessed and controlled through a
single AC-Link interface compliant with the AC’97 standard.
The 24.576 MHz masterclock can be input directly or generated
internally from a 13MHz (or other frequency) clock by an on-chip
PLL.
2.048MHz to 78.6MHz.
The WM9714L operates at supply voltages from 1.8V to 3.6V.
Each section of the chip can be powered down under software
control to save power. The device is available in a small
leadless 7x7mm QFN package, ideal for use in hand-held
portable systems.
BLOCK DIAGRAM
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device
The PLL supports a wide range of input clock from
can
connect
directly
at
http://www.wolfsonmicro.com/enews/
to
AC’97 Audio CODEC
mono
or
stereo
FEATURES
APPLICATIONS
AC’97 Rev 2.2 compatible stereo codec
On-chip 45mW headphone driver
On-chip 400mW mono or stereo speaker drivers
Stereo, mono or differential microphone input
Auxiliary mono DAC (ring tone or DC level generation)
Seamless interface to wireless chipset
Additional PCM/I
PLL derived audio clocks.
Supports input clock ranging from 2.048MHz to 78.6MHz
1.8V to 3.6V supplies (digital down to 1.62V, speaker up to
7x7mm 48-lead QFN package
Personal Digital Assistants (PDA) with or without phone
Smartphones
Handheld and Tablet Computers
- DAC SNR 94dB, THD –85dB
- ADC SNR 87dB, THD –86dB
- Variable Rate Audio, supports all WinCE sample rates
- Tone Control, Bass Boost and 3D Enhancement
- Automatic Level Control (ALC)
- Mic insert and mic button press detection
4.2V)
Copyright
2
S interface to support voice CODEC
Pre-Production, June 2006, Rev 3.0
2006 Wolfson Microelectronics plc
WM9714L
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